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<h1>atguigu,你好呀</h1>
测试基本注解:
<ul>
    <a href="/car/3/owner/李四">/car/{id}/owner/{username}</a>
    <li>@PathVariable(路径变量)</li>
    <li>@RequestHeader(获取请求头)</li>
    <li>@RequestParam(获取请求参数)</li>
    <li>@CookieValue(获取Cookie值)</li>
    <li>@RequestAttribute(获取request域属性)</li>
    <li>@RequestBody(获取请求体)</li>
    <li>@MatrixVariable(矩阵变量)</li>
</ul>

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